Scale Removal by Drying Evaporators with Steam

The scale formed in the tubes of evaporators lowers the heat conductivity.Its composition yaries with different cane varieties and different locations.The method of drying eYaporators with steam is briefly described. During evaporators breakdown, stedm is drawn into calandria. As the coefficient of heat expansiou is different between the scale and tubes, the scale will sepa-rate from the tubes. Then mechanical rnethod is used to clean out. The method is very simple and easy to use. It not only can reduce labour lntensity, but also save much chemicals used in cleaning.